TheStreet Ratings released rating changes on 95 U.S. common stocks for week ending March 2, 2012. 68 stocks were upgraded and 27 stocks were downgraded by our stock model.

NEW YORK ( TheStreet Ratings) -- Every trading day TheStreet Ratings' stock model reviews the investment ratings on around 4,700 U.S. traded stocks for potential upgrades or downgrades based on the latest available financial results and trading activity.

TheStreet Ratings released rating changes on 95 U.S. common stocks for week ending March 2, 2012. 68 stocks were upgraded and 27 stocks were downgraded by our stock model.

Rating Change #10

ATMI Inc ( ATMI) has been downgraded by TheStreet Ratings from buy to hold. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures, solid stock price performance and expanding profit margins. However, as a counter to these strengths, we also find weaknesses including deteriorating net income, disappointing return on equity and feeble growth in the company's earnings per share.

Highlights from the ratings report include:

ATMI has no debt to speak of therefore resulting in a debt-to-equity ratio of zero, which we consider to be a relatively favorable sign. Along with this, the company maintains a quick ratio of 3.60, which clearly demonstrates the ability to cover short-term cash needs.

Looking at where the stock is today compared to one year ago, we find that it is not only higher, but it has also clearly outperformed the rise in the S&P 500 over the same period, despite the company's weak earnings results. Despite the fact that it has already risen in the past year, there is currently no conclusive evidence that warrants the purchase or sale of this stock.

The revenue fell significantly faster than the industry average of 26.3%. Since the same quarter one year prior, revenues slightly dropped by 5.9%. Weakness in the company's revenue seems to have hurt the bottom line, decreasing earnings per share.

The company, on the basis of change in net income from the same quarter one year ago, has significantly underperformed when compared to that of the S&P 500 and the Semiconductors & Semiconductor Equipment industry. The net income has significantly decreased by 442.9% when compared to the same quarter one year ago, falling from $13.77 million to -$47.20 million.

Return on equity has greatly decreased when compared to its ROE from the same quarter one year prior. This is a signal of major weakness within the corporation. Compared to other companies in the Semiconductors & Semiconductor Equipment industry and the overall market, ATMI INC's return on equity significantly trails that of both the industry average and the S&P 500.

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ATMI, Inc. supplies high performance materials, materials packaging, and materials delivery systems for use in the manufacture of microelectronics devices worldwide. ATMI has a market cap of $739.1 million and is part of the technology sector and electronics industry. Shares are up 10% year to date as of the close of trading on Thursday.